April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of marriage June 4, 1921
The temperature on June 4, 1921 was between 15.1 °C and 23.7 °C and averaged 19.1 °C. There was 8.5 hours of sunshine (52%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 9 » Greco-Turkish War: The First Battle of İnönü, the first battle of the war, begins near Eskişehir in Anatolia.
March 1 » Following mass protests in Petrograd demanding greater freedom in the RSFSR, the Kronstadt rebellion began, with sailors and citizens taking up arms against the Bolsheviks.
March 6 » Portuguese Communist Party is founded as the Portuguese Section of the Communist International.
May 19 » The United States Congress passes the Emergency Quota Act establishing national quotas on immigration.
September 11 » Nahalal, the first moshav in Palestine, is settled as part of a Zionist plan of creating a Jewish state, later to be Israel.
October 19 » The Portuguese Prime Minister and several officials are murdered in the Bloody Night coup.
Day of death September 13, 1981
The temperature on September 13, 1981 was between 11.0 °C and 17.8 °C and averaged 13.8 °C. There was 3.5 mm of rain during 2.4 hours. There was 8.4 hours of sunshine (65%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 18 » Phil Smith and Phil Mayfield parachute off a Houston skyscraper, becoming the first two people to BASE jump from objects in all four categories: buildings, antennae, spans (bridges), and earth (cliffs).
July 7 » US President Ronald Reagan appoints Sandra Day O'Connor to become the first female member of the Supreme Court of the United States.
July 30 » As many as 50,000 demonstrators, mostly women and children, took to the streets in Łódź to protest food ration shortages in Communist Poland.
October 14 » Vice President Hosni Mubarak is elected as the President of Egypt, one week after the assassination of Anwar Sadat.
October 22 » The United States Federal Labor Relations Authority votes to decertify the Professional Air Traffic Controllers Organization (PATCO) for its strike the previous August.
November 11 » Antigua and Barbuda joins the United Nations.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I1768.php : accessed December 27, 2025), "Neeltje Spinder (1897-1981)".
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